Razor-sharpening machine.



W. F. RUNDEL. RAZOR SHAHPBNING MACHINE. APPLIOATIbN 1 11.21) 31:12.27,1909.

Patented Nov. 29, 1910.

2 SHEETS-SEEET l.

4 ma 2 w M Q W. F. RUNDEL. RAZOR SHARPENING MACHINE.

APPLICATION FILED PEB.27, 1909.

Patented Nov. 29, 1910.

2 SHEETSSHEET 2.

Witneaaeo UNITED STATES.

PATENT OFFICE.

m n: I. BUNIDEL, .os ramron'r, NEW YORK, asaicmon T0 mm; mome- TUBINGcompany, or nocnnsrnn, nnw Yonx, A coaronarxon or MW 2033.

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To all whom it may concern: 7 Be it known that I, WILLIAM F. RUNDEL, ofFairport, in. the county of Monroe and State of New York, have inventedcertain new anduseful Improvements in Razor- Sharpenin Machines; and Ido hereby declare the ollowing tobe a full, clear, and

exact description-{of the same, reference being had to the accompanyingdrawings, forming a part of this specification, and to the referencenumerals marked thereon.

, The present invention relates to razor sharpening machines, and it hasfor an object to provide a construction adapted to be used forsharpening any of the present commercial safety razor blades.

Another object of the invention is to provide a simple and effectivemeans for shifting a blade holder on movements of the machine inopposite directions over a sharpener.

A further object is to provide an improved blade-holder formed toreceive an main holder; Fig. 5 1s a auxiliary blade-holder which carriesa blade not adapted to be held 'by the main bladeholder. a

A still further object is to provide an auxiliary blade-holder adaptedto receive several forms of blades.

To these and other ends the invention consists of certain improvementsand combinations of parts all aswill be hereinafter more fullydescribed, the novel features being pointed out in the claims 'attheend'of the specification In the drawings; Figure l' is a topview of a razorsharpening machine embodying the present improvements; Figs. 2 and 3 areviews of opposite sides'of the machine, the handle bein broken 'away atits lower end; F igzis a0ngitudinal section of the ma chine showing onetype'of razor blade in the rspective view of one of theauxiha'ry holers; Fi 6' and 7 are perspective views of two bla esadapted' to bereceived-within the holder shown in Fig. 5; Fig; 81 is a transversesection of the mam holder showing the auxiliary holder illustrated-inFig. 5 containing the blade shown in Fig. 6; Fig. 9' is a perspectiveview of another form ofi auxiliary holder with the blade which it isadapted to hold shown in position thereon, and Fig. 10- is a 1persective viewof still another form 0 ho der with the blade for which it,is adapted positioned' thereon. p

specim n n... aunt Patented Nov. 29, 1910. Application filed February2'7, 1909. Serial No. 480,381.

In the present embodiment of theinvention there is employed a framepreferably comprising a' handle 1 secured to the under side of acrosspiece 2 bye screw extension 3, said: cross p ece connecting upright sidemembers 4 of the frame and preferably being formed in one piece withsaid side members which are bent laterally from. the fiat stock fromwhich the frame is made. The side pieces 4 support the shar ener "dcwhich, in this instance, is in the orm 0 four rollers 5, 6, 7 and 8, theouter rollers 5 and 8' being arranged slightly above the rollers 6 i and7 inorder that the sharpener 9,' in this instance in the form of aflexible strop, may be passed between 'them' in-themanner shown in Fig.4. Fhis arrangement causes that portion thereof lying between therollers 6 and 7 to be flat and taut when the strop is placed undertension while the flexed portions will cause the rollers to rotatedue tothe friction thereon. The rollers 5, 6 andi8 preferably turn on pins 10which are ri 'd with the main frame-and connect the side pieces 4- whilethe roller? is journaled in latter tor the purpose to be hereinafter set-forth.

' the side pieces and mayproject beyondthe 1 Operating to one side ofthe plane of the rollers 6. and 7 and ina plane transverse to I saidplane and between said rollers is a blade j holder which, this instance,is mounted to -oscil-la-te so as to carry a'blad'e therein from i oneside of its axis to tlie'o positeside. In

order to'eifect .the oscillatlo'n of the bladeholder the latter isconnected to the'roller 7 3 so that when said roller moves-in one direc-.tionunder the action of the sharpener the 5 blade will be caused tobear. upon the strop on; one side of the axis of the oscillatory holderand when the roller is shifted in the other direction the, holder willalso be shifted so as to bear on the strop on the. opposite side ofsaidlaxis. v

- The connectiori between the roller 7 and the oscillatory blade holderis preferably in the form ofa pairof links 11 and 12 of equal length andeccentric'all connected to both the holder and the rol er at the samedis-' tances from the turning axes of saidparts, the points ofconnection of one link'however being shifted relatively to those of theother at distances about the axes less than 180 so that it is impossibleforsaid parts to strike a' dead center. To permit the eccentric cononthe holder having the same. angular re- I embodies a shaft 14 to whichthe'arms 13 of the holder are secured. Carried by thisneetion of thelinks with the holder and the roller, said parts are provided at eachend with arms l3arranged beyond the sides of the frames, the armsoftheroller being arranged at an angle to each otherandthose' lation. r

The main razor blade holder preferably shaft is a pair of jaws which maybe made from spring material and formed wlth opposed longitudinallyextending grooves, the

walls 15 of which preferably converge toward the outer ends of the jawsand have shoulders 16 at their inner ends. The shape of these groovespermits the holder to receive a blade of wedge-shaped cross-section,

also have opposed longitudinalgrooves 18 v of curved cross section.These clamping the jaws of the'main holder, the hinge there.

portions serve for securing blades of other shapes, as will benowpolnted out.

In order to permit the main holder to receive blades having other shapesthere .provided one or more auxiliary holders which have different meansfor engaging and retaining the blades, varying with the shape or form ofthe blade. The auxiliary holder may embody a pair of jaws 19 hingedtogether at 20 along a line parallel with the edges of a blade heldthereby. This .holder clamps. a blade and is itself clamped between ofbeing clamped and supported by the grooved clamping portions 18.

.In Figs. Sand 8 the jaws of the auxiliary holder are formed of t\ '0pieces of sheet material stampedor pressed outwardly near the hinge 20so as to the outer edges 0 the jaws and grooves or depressions 25 toreceive an enlargement 21 onthe blade 22, longitudinal shoulders on thebladebcing engaged by shoulders formed by the inneredges of the groovesto retain the blade in the holder. When in the main holder theenlargement fornfed on the auxiliary holder lies in the-grooves 15 andthe shoulders 16 are engaged by the shoulders formed on the rear face ofthe enlargement on the auxiliary holder, while the hinge lies in grooves18 and the outerends of the auxiliary jaws are clamped by the forwardends of the main jaws. One jaw may also be provided with projections 24in the flat portions 25 in advance of its enlarged or depressed.-

preferably are ofa common form but 1provide flat faces 25? near.

ortions 25 to cooperate with the. 5 ends of t eblade 22 or withthe-walls of the notches 2'6 in the blade, opposite jaw being recessedat 27 to receive the projections.

In Fig. 9 the jaws of the auxiliary holder are flat and two' pairs ofprojections or shoulders 28 and 29 are provided on one jaw, enepair 28being nearer the outer edge of said jaw than the other pair 29 which hasits members closer together than the first named pair. This holder isadapted for a blade 30 of the form illustrated. In Fig. 10 the holder isthe same as shown in Fig. 9 except that the projections 31 are largerand pass through openings in the blade instead of coiiperating with theedges of the blade.

In operation a blade is inserted directly into the main holder from oneside of the jaws of the latter, or it is placed in an auxiliary holderwhich is introduced between the jaws, the strep preferably having firstbeen threaded between the guide rollers as shown in Fig. 4. When thestrop is secured at both ends, the handle 1 is grasped and the machineis moved back and forth 'on' the strep which acting on roller 7 causesthe lattcr to turn or oscillate and in turn transmit its motion to theblade holder, thereby presenting to the strep firstone side of the bladeedge and then the other.

A machine constructed in accordance with shown in Fig. 7,'t-he 4 thisinvention is simple to operate and inexpensive to manufacture. Itis'adapted for sharpening any of the present commercial safety razorblades, thus adding life. to blades which are now-thrown away.

I claim as my invention:

1. The combination with a main holder having a pair of jaws formed withopposed grooves and clamping portions on the inner and the outer sidesof the grooves, of an auxiliary holder embodying a pair of jaws formedwith enlarged portions between its inner and outer ends lying in thegrooves and with portions on opposite sides of the enlarged portionsclamped bythe inner and outer clamping portions of the main holder.

2. The combination with a main holderembodying a pair pf'jaws formedwith 0pposed grooves, the walls of which converge toward the outer endsof the jaws and have shoulders formed at their inner ends, said Illjaw-s being provided with opposed'grooves in rear of the shoulders, 'tofa removable auxiliary holder embodying a pair of hinged jawsformedwith'enlarged portions between the hinge be: of the innergroovesand the enlarged portion being..re.---

the hinge and their outer ends, ing engaged 'by the walls ceivedwithiirthe outer grooves and engagmg the shoulders.

3. The combination withaJnain-hdlder embodying a pair of jawsformed-with opposed grooves converging towardtheouter ends of the jaws,saidjaws being provided with clamping portions in rear of the grooves,of a removable auxiliary holder embodying a pair of jaws engaged by theclamping portions of the' main holder on opposite sides of the groovesof the latter.

4:. The combination with a main holder embodying a pair of jaws formedwith opposed grooves, and opposed grooves in rear of the first namedgrooves, of an auxiliary holder having two hinged jaws, the hinge lyingin the rear grooves and the forward portions of the auxiliary jaws beingengaged by forward portions of the main jaws.

5. An auxiliary razor blade holder embodying a pair of jaws hingedtogether along a line parallel-with the edges of the blade in theholder, one of said jaws having a shoulder thereon to coiiperate with ashoulder on a blade tometain the latter in a certain position betweenthejaws.

6. An auxiliary blade holder embodying a pair of'jaws hinged togetheralong a line parallel with the edges of the blade in the holder, one ofsaid jaws being provided with a longitudinally extending shoulder forcooperation with 'a shoulder on the blade to retain the latter betweenthe jaws.

7. The combination with a main holder having opposed grooves on theirinner faces formed by walls converging toward the outer ends of thejaws, of an auxiliary holder embodying two hinged jaws held betweenfthemain jaws, one of said hinged jaws being provided With a longitudinallyextending shoulder.

8. An auxiliary blade holder embodying a pair of jaws hinged togetherand formed with opposed fiat surfaces near their outer edges, anddepressed portions or grooves 1n 1 rear of the fiat portions.

9. An auxi liary blade holder embodying apair-lofja'ws formed withopposed flat surfaces near their outer edges and grooves or depressedportions in rear of the fiat portions, one of said fiat portions havingprojections near opposite sides thereof and the other having recesses toreceive said projections.

10. The combination with an oscillatory blade holder, and a sharpenerguide arranged in proximity thereto embodying an oscillatory roller, ofa pair of links of equal length eccentrically connected to the rollerand the holder, the points of the connections of said links being thesame distance from the centers of turning of both parts but those of onelink bein shifted relatively to those of the other a distance less than180.

11. 'lhe-combination with an oscillatory blade holder, and a sharpenerguide arranged in proximity thereto embodyin an oscillatory roller, ofarms extending rom opposite ends of said rollers and said blade holder,the arms on the roller being arranged at an angle to each other' lessthan 180,

while those on the holder have the same angular relation, and links ofequal length con- WILLIAM F. RUNDEL.

Witnesses:

HENRY W. Hie-LL, HAROLD H. SIMMs.

